He was an awesome teacher. His experiments were great! Genie in a Bottle and Bloody Hand were classic
omgg talk about best teacher everrrr.i would absolutely love to take his class again. hes soo nice and funny :]
I LOVE MR. CALLAHAN! DID YOU KNOW HIS TWIN TEACHES SOMETIMES? HE IS COMPLETELY AWESOME! MAKES SCIENCE SOOOOOO FUN! I LOVE HIS EXPERIMENTS! HE'S SOOOOOOOOOOO FUNNY!
Awesome teaher...always helpful and kind to everyone!
Mr Callahan is really cool. His experiments are always really interesting, and he always has a quick response whenever he makes a mistake. His in-class contests are cool too.
Coolest guy ever, on the last doy we ate candy played on the internet and played hangman. We had so many interesting experiments.
im in vernon but i go to like evrything about hardyston cause i got tons of friends there! i heard this dude is pretty cool! o give ya a smiley! lol
mr cal is da best!!! the notes from table 3 in da red class!! yea go us!!!!!!!!
mr cal is soooo awesome!!!! even if he is a little bit on the nutty side... its aiight
Callahan is the man!! Hes soo funny n senial n I luv making fun of him..got ur termss alrightka!!!!!!He was a good teacher!
i luved mr calahan he was awsome and he made science fun to learn which i cant say for sum of the teaches at tech *cough ms beuning* hehe