blocks on computers

i think there should not be such strict blocks on the internet. it hinders our education, research in particular. last year i was in speech and i had to do a speech on under age drinking. i couldnt find any information that included the word alcohol. it was ridiculous! than later that year in health class i needed pictures of meth users and labs for a power point. every site was blocked! i had no information what so ever.
im not saying get rid of the blocks entirely but just block things that are definitely unneeded for school like how to make bombs or porn. leave other sites open to the students for education.