Welcome to High School

Enrollment: 21+

Let’s go to High School. Learn all about the different cannabis highs.

Free, plain-language lessons on what causes each high, what changes it, and how to find yours. No tests, no hall passes. We bring in the chemistry when it helps.

Browse all 601 lessons
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589 articles

Choose your path

Pick your class

Choose the situation closest to yours. No prerequisites, no required order.

  1. Being social
  2. Summer plans
  3. Playing music
  4. Switching off
More goals 8 more paths
  1. Movie night
  2. Making art
  3. Getting focused
  4. Finding energy
  5. Sleeping better
  6. Easing pain
  7. Calming anxiety
  8. Working out

Browse every strain guide

Core curriculum

Highs 101: one class for every High Family

Every strain we track lands in one of six High Families. Each class is four short lessons on what makes that high feel the way it does.

Start with the intro course Understanding High Families: A Better Way to Choose Cannabis

Swipe to see all six classes.

  1. Professor High juggling lemons in a sunny classroom

    Uplifting High 101

    Bright mood, social energy

    1. Understanding Limonene: The Citrus Terpene That Elevates Your High
    2. Terpinolene: The Rare Terpene for Energy and Creativity
    3. Cannabis and Serotonin: The Mood Connection Beyond THC
    4. Best Cannabis Strains for Creativity: Science-Backed Guide
    Meet the Uplifting High family
  2. Professor High striding through a lab at sunrise with a coffee mug

    Energetic High 101

    Clear, focused lift

    1. Pinene: The Forest Terpene for Memory and Focus
    2. THCV: The Energizing Cannabinoid That Suppresses Appetite
    3. Morning Cannabis: The Chemistry of Energy and Focus Before Noon
    4. Microdosing Cannabis for Productivity & Focus: Your Complete Guide
    Meet the Energetic High family
  3. Professor High dozing in an armchair on a moonlit night

    Relaxing High 101

    Deep body calm

    1. Myrcene: The Sedating Terpene Behind the 'Couch Lock' Effect
    2. Linalool: The Lavender Terpene for Calm and Better Sleep
    3. CBN: The Sleepy Cannabinoid — Facts vs Fiction
    4. Cannabis and Sleep: The Science Behind Better Rest
    Meet the Relaxing High family
  4. Professor High beside a level balance scale with a leaf on each pan

    Balancing High 101

    Steady and easygoing

    1. CBD Is Stimulating, Not Sedating (At Low Doses): The Science Explained
    2. How to Find Your Ideal THC to CBD Ratio: Step-by-Step Guide
    3. Finding Your THC:CBD Sweet Spot: 1,400 Pain Patients Show the Way
    4. Cannabis & Anxiety: The Complete Science-Backed Guide to Finding Relief
    Meet the Balancing High family
  5. Professor High with herbal tea in a calm greenhouse

    Relieving High 101

    Soothing, heavy body feel

    1. Caryophyllene: The Only Terpene That Acts Like a Cannabinoid
    2. Cannabis and Inflammation: The Complete Molecular Science
    3. Cannabis for Arthritis and Joint Pain: CBD, THC, and Beyond
    4. Best Cannabis Strains for Stress Relief: The Science
    Meet the Relieving High family
  6. Professor High conducting an orchestra of molecules

    Entourage High 101

    Layered, full-spectrum feel

    1. The Entourage Effect Explained: Your Complete Guide to Cannabis Compound Synergy
    2. How to Read a Cannabis Terpene Profile
    3. The Science of Terpene Synergy: Why Combinations Beat Single Compounds
    4. Cannabis Flavonoids: The Anti-Inflammatory Compounds Beyond Terpenes
    Meet the Entourage High family

Campus map

Departments

Six departments, from first questions to deeper science.

  1. Science & Research Deep dives into cannabis research and scientific understanding 336 lessons
  2. Compounds & Chemistry Cannabinoids, terpenes, and plant chemistry 230 lessons
  3. Beginner Guides Essential knowledge for cannabis newcomers 393 lessons
  4. Wellness & Health Therapeutic applications and mindful consumption 335 lessons
  5. Legal & Policy Laws, regulations, and policy updates 82 lessons
  6. Consumption Methods Guides to different ways of using cannabis 150 lessons

Curated collections

Keep learning

Three routes: Professor High's strongest explainers, the rest of orientation, and the honors track.

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The same research, cut to one idea at a time.

Every lesson

The library

Search, filter, or browse every lesson. The newest lessons appear first.

All lessons

Showing 24 of 589 · newest first

A blank checkout receipt rests on an accounting ledger beside a separate cash drawer and a cannabis flower jar.
Guide7 min

Cannabis Company Earnings: Revenue, Profit and Cash Flow Explained

Read cannabis earnings beyond the headline. Compare revenue, GAAP profit, adjusted EBITDA, cash flow and 280E tax effects using 2026 examples.

Professor High
Professor High
A blank portrait ID enters a countertop scanner beside a separate filing drawer containing similar cards.
Guide7 min

Why Do Dispensaries Scan Your ID—and What Do They Keep?

Does a dispensary keep your ID scan? Separate age checks, stored records, delivery details, and marketing consent in California, New York, and Massachusetts.

Professor High
Professor High
A cream-sleeved hand offers an amber bottle to an older adult above a blank clipboard.
Guide6 min

Does Medicare Cover CBD in 2026? The $500 Pilot Explained

The CMS CBD initiative isn't a retail reimbursement benefit. Learn who may qualify, how the $500 limit works, and what to ask your care team.

Professor High
Professor High
A beverage can behind a transparent barrier with two separate latches and two blank cards, a metaphor for two required approvals.
Guide6 min

Minnesota THC Drink Licenses: State vs. Local Approval

Selling THC drinks in Minnesota? Understand LPHE licenses, local retail registration, product rules, and the testing extension to May 2027.

Professor High
Professor High
A generic caution triangle marks a cannabis pouch beside a separate schematic laboratory trace and sample vial.
Guide5 min

What Does the THC Symbol on Cannabis Packaging Mean?

Learn what cannabis warning symbols mean in California, New York, and Washington, why stickers aren't proof of authenticity, and where to find official designs.

Professor High
Professor High
Dental teaching model and examination mirror beside a cannabis leaf, illustrating the topic of cannabis and gum health.
Science9 min

Does Smoking Weed Cause Gum Disease? What Studies Show

Cannabis smoking is linked to gum disease, but causation is less certain. Explore the research, dental warning signs, and everyday oral care.

Professor High
Professor High
A sliced mango beside a cannabis leaf under a magnifying glass, illustrating a closer look at the mango myth
Science9 min

Do Mangoes Make You Higher? What the Myrcene Evidence Says

No. No human study shows eating mango makes a cannabis high stronger. What the myrcene in mango and cannabis actually does, and why the tip keeps spreading.

Professor High
Professor High
Editorial illustration of an amber-filled vape cartridge beside a laboratory vial and microscope.
Science9 min

Heavy Metals in Cannabis Vapes: Why the Hardware Matters

THC vape carts can pick up metals from the hardware, not only the oil. What aerosol studies found, why a passing lab report can miss it, and what to ask.

Professor High
Professor High
Hemp seeds and culinary oil beside an amber dropper bottle, with a magnifying glass suggesting careful label reading.
Guide9 min

Hemp Seed Oil vs. CBD Oil: What the Label Really Means

Hemp seed oil and CBD oil are different products. Learn how to read ingredients, CBD milligrams, and lab reports before paying for the wrong bottle.

Professor High
Professor High
Intact cannabis cartridge, reusable pen battery, and sealed disposable beside a phone and disposal checklist.
Guide9 min

How to Dispose of Cannabis Vape Pens, Carts, and Batteries

Learn how to dispose of cannabis vape pens, cartridges, and batteries safely, what to ask collection sites, and why THC devices need a separate check.

Professor High
Professor High
Conceptual laboratory still life of cannabis flower in a glass dish under cool light
Science9 min

Irradiated Cannabis: Radioactivity, Terpenes, and Safety

Does irradiated cannabis become radioactive or lose terpenes? Explore the research, microbial safety limits, and questions to ask before buying.

Professor High
Professor High
Editorial illustration of a stomach-shaped hourglass beside a plain injection pen and an edible
Science9 min

Ozempic, Wegovy and Cannabis Edibles: What We Actually Know

Do edibles work differently on Ozempic or Wegovy? Explore verified research on semaglutide, stomach emptying, THC timing, and the evidence gaps.

Professor High
Professor High
An unbranded adhesive patch and release liner beside an amber jar of balm.
Science9 min

THC and CBD Patches: What Actually Gets Through Your Skin?

Do THC and CBD patches work? Explore human absorption studies, patch versus cream differences, and why labeled milligrams aren't a delivered dose.

Professor High
Professor High
Sunlit cotton sofa and glass coffee table in a clear-air living room, illustrating surfaces where smoke residue may settle.
Science9 min

Thirdhand Cannabis Smoke: What Stays on Your Surfaces?

Yes, cannabis smoke leaves residue on walls, furniture and fabric after the air clears. What studies measured, what is still unknown, and how to limit it.

Professor High
Professor High
Illustration of pale plant ash and dark char in separate ceramic dishes beside cannabis flower
Science9 min

White Ash vs. Black Ash: Does It Reveal Cannabis Quality?

Does white ash mean better weed? Learn what cannabis ash color can reveal, what it cannot prove, and how to check flower quality before buying.

Professor High
Professor High
Editorial photograph illustrating "Batch Variance: Why the Same Strain Produces Different Lab Results"
Science12 min

Batch Variance: Why the Same Strain Produces Different Lab Results

Why does the same strain test 19% THC once and 24% the next? Batches, plants, samples and labs all vary. How to compare two lab results without being misled.

Professor High
Professor High
Editorial photograph illustrating "Cannabis Chain of Custody: From Sample to Lab Result"
Guide12 min

Cannabis Chain of Custody: From Sample to Lab Result

Follow a cannabis sample through collection, sealing, transport, lab receipt, and testing—and learn what chain of custody can actually prove.

Professor High
Professor High
Editorial photograph illustrating "Cannabis Edible Label Accuracy: Why Milligrams Can Miss"
Science11 min

Cannabis Edible Label Accuracy: Why Milligrams Can Miss

A 10 mg edible is a tested estimate, not a perfect promise. Learn how serving math, homogeneity, sampling, and lab uncertainty shape the label.

Professor High
Professor High
Editorial photograph illustrating "How to Check Cannabis Recalls by Batch or Lot Number"
Guide11 min

How to Check Cannabis Recalls by Batch or Lot Number

Learn how to check a cannabis recall using the batch, lot, UID, or package number—and what to do if your product matches.

Professor High
Professor High
Editorial photograph illustrating "How to Compare Cannabis Products Beyond THC Percentage"
Guide11 min

How to Compare Cannabis Products Beyond THC Percentage

Compare cannabis by batch COA, dose, format, chemical profile, freshness, recalls, value, and context—not one headline THC percentage.

Professor High
Professor High
Editorial photograph illustrating "How to Read Pesticide Results on Your Cannabis COA"
Guide12 min

How to Read Pesticide Results on Your Cannabis COA

Learn how to read pesticide results on a cannabis COA, compare the result with the action limit, decode ND and LOQ, and spot state-rule caveats.

Professor High
Professor High
Editorial photograph illustrating "How to Read Residual Solvents on a Cannabis COA"
Science11 min

How to Read Residual Solvents on a Cannabis COA

Decode residual-solvent results on a cannabis COA, including ppm, ND, LOQ, action limits, pass/fail, product type, and state-rule differences.

Professor High
Professor High
Editorial photograph illustrating "How to Match a Cannabis COA to the Package in Your Hand"
Guide11 min

How to Match a Cannabis COA to the Package in Your Hand

Learn how to match a cannabis COA to its package using batch, lot, UID, product, lab, and date checks—and what to do when they disagree.

Professor High
Professor High
Editorial photograph illustrating "Measurement Uncertainty on Cannabis Lab Reports Explained"
Science12 min

Measurement Uncertainty on Cannabis Lab Reports Explained

Learn what measurement uncertainty means on a cannabis COA, why tiny potency gaps may be meaningless, and how labs make calls near legal limits.

Professor High
Professor High
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