Seminars, practice cases, and tutoring
Free for any high school student.
Sign up for the seminar
Name and email. We will send you the link.
Food Markets, Policy, and Power
An introduction to food economics examining how agricultural subsidies, corporate concentration, and global trade shape food prices and access.
Tuesday, December 8, 2026. One hour. Free, and open to any student.
Questions? Email viyan@econstax.net.
Practice cases
Economics & Policy practice case
A worked case with exhibits, questions, a model answer, and what to practice.
Finance & Investment practice case
A worked case with exhibits, questions, a model answer, and what to practice.
Business Strategy practice case
A worked case with exhibits, questions, a model answer, and what to practice.
Entrepreneurship practice case
A worked case with exhibits, questions, a model answer, and what to practice.
Markets & Consumer Strategy practice case
A worked case with exhibits, questions, a model answer, and what to practice.
Each case matches one of the five competition events. The rubric and rules are in the competition details.
Ages 9–13
Summer 2027 interest list
A parent or guardian fills this out. We will email you when dates are set.
Two weeks of online morning classes for ages 9–13. Summer 2027 dates are not set yet.
What we taught in 2026
- Markets and prices. Why prices move. Students run a classroom market and set the prices.
- Incentives and decisions. How people make choices, tested on the class.
- Businesses and profit. Marketing, pricing, and profit. Students run a pretend business for a week.
- The whole economy. Money, inflation, unemployment, and what governments can do about them.
The last session ran July 27 to August 8, 2026, online, two weeks of mornings. We only ask for a parent or guardian’s name and email. We do not ask for your child’s name.
Try a pricing activity from the 2026 program
Imagine a lemonade stand. Each cup costs $1 to make. A stall costs $12 for the day. At $2 per cup, you expect to sell 30 cups. At $3, you expect to sell 18. Which price would you test?
- Calculate revenue and total costs at each price.
- Explain why the price that sells more cups might earn less profit.
- Change one assumption. A competitor opens nearby, ingredient prices rise, or customers want a larger cup. Would you change the price?
Answer. At $2: revenue $60, cup costs $30, stall cost $12, profit $18. At $3: revenue $54, cup costs $18, stall cost $12, profit $24. With these numbers the higher price earns more profit even though it brings in less revenue.
Then build a short pitch. Describe the customer, the product, the price, and the costs. Say how you would reach customers and name one thing you would test before spending more.
One-on-one tutoring
Tell us what you want to work on.
A student on the ERI team will email you to set up a time.
Tutors do not see competition questions.
You can also practice on your own at trainer.econstax.com.