Well for starters the website that gave you assignments on security of web applications shouldn't have an SQL injection vulnerability on the login page.

Next would be the method of teaching, they would skip what not to do and go straight to what you should do. This in turn causes people to use the exec command in php that actually takes a POST parameter.

And stop allowing teachers to be lazy fucks that don't explain shit and only give you assignments.

And finally when telling the teacher that a method he uses would cause another vulnerability the teacher should properly fix this issue not say it is for an "advanced course".

Yes I am pissed