I see your point there. I'm not completely sure what the best option would be here. The core problem with them Googling answers to their questions is that the solutions they come up with may not be remotely what you are looking for, leading to a nightmare on your end too.
Is there any way to increase the amount of help you have so that you can focus on what really needs it? Maybe have a system of checks where lower level users review the students' proposals before they get to you?