FUTURE SCHOOL

Rahul woke up in the morning and glanced at the calendar "21October, 2035", he strode towards bathroom and got fresh and saw the time in watch 11 a.m.. most of the schools have their assembly time from 12 am or 1 pm, as school principals forbid to disrupt the sleep of children. At 10:30 am his bus came, oh it would be wrong to say it a bus, a jet bus. Within a few seconds of flight Reached his school. you might be thinking about the fuel of bus, that was "water", economical option. Rahul entered school building, saw some students playing games in their latest gadgets and teachers enjoying talking with each other. Students were shouting at teachers "be silent, otherwise we wont be able to concentrate on game". Ignoring all these things, Rahul handled his school bag to "Robot Asima", who used to take the school bags of students to the class room. rahul strode towards lift and entered, pressed the keys 124, for reaching 124th floor.
He reached the 124th floor and started moving towards his class. He entered the class and saw his madam who taught him science. After sometime when class settled teacher said "students, i gave u some questions for homework through telepathy, have you all done with it?" Students answered "yes mam".
Ok, I should test your knowledge first she said and started asking Questions-

which organ of our body enables us to breath?
Rahul was about to answer "LU....."
but students shouted oxygen cylinders.
Next question was :  what time does it take to reach moon?
students answered "30 minutes". Rahul was amused again.
teacher asked: who revived the law of gravitation?
students answered : Robot rty678oO
teacher was pleased to listen.
Suddenly teacher fainted and rahul got worried,
after some time nurse came and took teacher with her. 
After some time when teacher came bak and students
asked what happened to her. 
She replied " Nothing my children, my battery got discharged, 
I forgot to charge it in the morning"
Rahul suddenly wake up and his mother was shouting
" wake up".