1-Jun-09-2026-04-54-54-1442-PM
Diversity

Back to School Isn't Just for Kids.

This year, CASTL is helping you turn that momentum into action with savings of 20% on courses designed to advance your career, strengthen your team, or enhance your curriculum.

Use code COA20OFF

The More You Learn, The More You Save

Enroll in

Savings

2 courses

20% off

3 or more courses*

Up to 25% off

* Contact Us for bundles of 3 or more.

Offer ends Monday, September 30 11:59 pm local time.

Bundle & Save with Code: COA20OFF

Not Sure Where to Start?

Explore our most popular courses:

GMP: Foundations of Good Manufacturing Practices

 Get the knowledge you need to thrive in regulated environments and see how GMP powers quality, consistency, and trust across manufacturing. 

Learn More

Biopharmaceuticals: Overview of the industry

Get a foundational understanding of the biopharmaceutical industry from discovery to delivery and take a self-guided 360-degree tour of NIBRT's training plant to see biomanufacturing come to life. 

Learn More

Cleanrooms and Cleanroom Behaviour

Learn what a cleanroom is, explore contamination entry routes, and discover how personnel can minimize their impact — through scenario-based videos, 360 VR interactions, and animations following real-world cleanroom tasks. 

Learn More

Savings for Every Learner

Individual Learners

Invest in yourself this fall. Whether you're changing careers, chasing a promotion, or just channeling that back-to-school energy, bundle 2+ CASTL Online Academy courses and keep more of your budget for what's next.

Explore COA Courses

Employers and Teams

Fall is planning season — make your training budget go further. Enroll your team in 3+ CASTL Online Academy courses and save 25%, with easy options for group enrollment.

Talk to us about team bundles

Academic Institutions

Looking to complement your curriculum with industry-relevant content? Add CASTL Online Academy courses to your program at a discount and give students hands-on skills alongside their coursework.

Explore academic partnerships

Class Is Back in Session. Don’t be late!

 

Use code COA20OFF

 

This offer ends Wednesday, September 30, 11:59 pm local time.

FAQ

How do I get the discount?

Use code COA20OFF at checkout once you've added 2 courses to your cart.

What if I want 3+ courses?

While code COA20OFF applies to only two courses, you can contact us for courses of 3 or more with discounts of up to 25% off. 

Can I mix and match any courses?

You can mix and match any courses. 

For 3+ courses, please contact us for bundled savings of up to 25% off. 

What if I'm enrolling a team?

Reach out to our team for support with group or bulk enrollment — we'll help you build the right bundle.

When does the offer end?

Wednesday, September 30, at 11:59 pm local time. The discount cannot be applied after this time.

Questions? Contact us!
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Your Back-to-School Savings Starts Now.

New semester. New skill. New you — for less.
But only until Wednesday, September 30.
Start Learning & Save with Code COA20OFF