First we do this: 

Then we see all these links saying David Hogg DEFINITELY did not graduate from Redondo Shores High School.

Then there’s the link saying David Hogg did graduate from Redondo Shores in 2015 on classmates.com. When you click on the link, it says classmates.com took the page down that indicated David Hogg graduated from Redondo Shores High School in 2015:

This appears to be the entry from before classmates.com took the page down.