In regards to the PAL codes, it is a little different. On The Middle Ages page, it has categories below that are with each site, which you would be able to navigate to the site from that specific category from clicking on it. I do see the problem, but I do not think I will get around to the CTY Online courses for a little while.
It appears as if they have changed the code for Honors Pre-Algebra to HPA, probably to not get people confused even though Palo Alto is now defunct. I will fix that right away. Thank you for your concerns.
Thanks so much for your comments! I'm glad I could help you through the session and thank you as well for being such an amazing friend! - Amelia
Added the image! It's grainy because it's a still taken from a Snapchat video, but I think it gets the point across... let me know what you think! Cheers