compañero de clase
for a male is compañero and for female is compañera
In Spanish, you would say, "Buenas tardes, compañeros. Buenas tardes, señora." This greeting is appropriate for addressing classmates and a female teacher or authority figure in a respectful manner. You can adjust the word "señora" to "señorita" if the teacher is younger or unmarried.
Mis compañeros son extrovertidos y graciosos. Silly might translate to "tonto" but that can have a negative connotation.
dos
Dos guisantes en una vaina is how you say two peas in a pod in Spanish.
There is two ways to say orange in Spanish, the meanings are different though. Naranja is Spanish for the kind of orange you eat and anaranjado is Spanish for the color orange.
In Indian culture, you can say "Namaste mere saathhii saathhii vishaalaa shrenii ke" to greet your fellow classmates.
class-ma-tays
Kurasumēto sayonara
Eighty-two in Spanish is ochenta y dosRAUL
Say+on. Put these two English words together and you will say Sean as it was meant to be said in Spanish.
Dos millones.