About the Course

Grossology

The human body is an amazing but sometimes gross thing. From the blood inside us to the gas that comes out, each slimy, gunky, or smelly part has a vital role to play in keeping us healthy. Why do we burp, and why does it smell? What are boogers made of? What’s in blood, and why is it so red? And why do scabs form once the bleeding has stopped?

Explore these questions and bodily functions with your peers through online discussion, anatomy and physiology mini-lessons, research articles, and short at-home experiments.

Gain a better understanding of the human body—especially those things you don’t want to discuss at the dinner table!

Fall and Spring Time Commitment: 4-5 hours per week (1-hour of class time, 3-4 hours of independent work).
Summer Time Commitment: 12-15 hours per week (3-hours of class time, 9-12 hours of independent work).

Course Overview

This course is

ungraded.

Classes

Register for an Online course by selecting an open class below. If no open classes are listed, then course enrollment is currently closed. Note: You will need to have an active CTY Account to complete registration through MyCTY.

Mondays, Wednesdays, and Fridays
-
3 weeks
9:00 p.m. (ET)
$1,433
Enroll

Testing and Prerequisites

  Math Verbal
Required Level CTY-Level or CTY-Level
Check your eligibility using existing test scores If you do not have existing test scores:

Students must achieve qualifying scores on an advanced assessment to be eligible for CTY programs. If you don’t have qualifying scores, you have several different testing options. We’ll help you find the right option for your situation.

Sign up for Testing Learn More

Cost and Financial Aid

  • Tuition
    • Varies
  • Application fee
    • Nonrefundable Application Fee - $15 (Waived for financial aid applicants)
    • Nonrefundable International Fee - $20 (outside US only)

CTY Financial Aid Availability for Online Programs

Academic Year 2025-26 (Course start dates July 1, 2025- June 30, 2026): Financial Aid funding is currently available for all eligible students while funding lasts. If interested in applying for financial aid, please select a course with start date of July 1, 2025, or later.

Learn More

Course Materials

Please acquire all course materials by the course start date, unless noted as perishable. Items marked as “perishable” should not be acquired until the student needs them in the course. If you have questions about these materials or difficulty locating them, please contact [email protected].
 

Book Title: Grossology: The Science of Really Gross Things
Author: Sylvia Branzei
ISBN: 978-0843149142

Materials

Household supplies for labs, including but not limited to:

  • Bread
  • Milk
  • Gelatin
  • Eggs
  • Gummy candies
  • Vinegar
  • Salt
  • Marshmallows
  • Sprinkles
  • Pudding cup
  • Rubbing alcohol
  • Sunscreen
  • Office supplies like: pencils, paper, markers

 

Technical Requirements

This course requires a computer with high-speed Internet access and an up-to-date web browser such as Chrome or Firefox. You must be able to communicate with the instructor via email. Visit the Technical Requirements and Support page for more details.

This course uses a virtual classroom for instructor-student communication. The classroom works on standard computers with the Zoom desktop client, and on tablets or handhelds that support the Zoom Mobile app. Recorded meetings can only be viewed on a computer with the Zoom desktop client installed. The Zoom desktop client and Zoom Mobile App are both free to download.

Terms & Conditions

Students may interact in online classrooms and meetings that include peers, instructors, and occasional special guests.

Courses may include videos from the web. Recommendations or links at the end of videos are provided by the video host and are not CTY recommendations. 

You may have the option to post your work on public third-party sites (e.g., YouTube). 

Virtual class meetings may be recorded for students to review.

After a you complete a course, your projects may be used to illustrate work for future students. 

About Science and Engineering at CTY

Our Science and Engineering courses bring a variety of science topics to life. By introducing topics not covered in standard science curricula, we build and reinforce your science knowledge. All courses support critical thinking, problem solving, and reasoning, and encourage a hands-on approach to learning about Earth, space, life sciences, chemistry, and the physical world. Guided by expert CTY science educators, you’ll perform hands-on experiments using common household objects, and participate in dynamic group discussions.

Engage with science enrichment courses

In Introduction to Crime Scene Investigation, you’ll review the fascinating history of forensics, crime-scene evaluation, and the crime lab. You’ll learn the skills, equipment, and technology used to analyze physical evidence while reinforcing your understanding of the scientific process.