"I need to write in class."
Translation:Yo necesito escribir en clase.
I have noticed that leo and escribo is used directly after yo. When yo is followed by quiero or necesito the leo becomes leer and escribo becomes escribir. At least it has worked like that so far.
GeorgiaDun is right, it's the first verb which reflects the individual, the second doesn't.
the real answer is i need to write in class but your answer was i need write in class