may wake you up a bit, but without sleep no stimulant
is going to work as well as you probably hope it will. I would recommend trying to tough it out and then getting some chemical free sleep after school, but if you can't make it through without a "pick me up" then you might want to try holding the concerta under your tongue until the coating is gone (absorbed into your body sublingually) and then if your teeth can bear it, chewing the inside of the Concerta. If you take it normally, you probably won't feel much of anything.
in a more complex extended release capsule) may not work very well after the vyvanse though, because it works by inhibiting the reuptake of dopamine
and norepinephrine (and to a lesser extent serotonin
) and the vyvanse + lack of sleep has probably reduced how much dopamine is being produced in your brain, so the methylphenidate will have less of an effect than usual.
Good luck on your exams and try to get some sleep.