add some pictures of your space for better suggestions

if you are planning for duco/pu paints or membrane finishes, you should use external grade MDF. This will give a better finish. Tandem/innotech drawers are anytime better than steel wire baskets if you are going for drawers more than 2ft wide. Wire baskets will sagg over a period of time. Tandem/Innotech comes with soft close as default.

mostly Indians uses brown varnish paints for their main wooden doors....I even don't know why they didn't use other colors...even in my house doors are given brown color wooden texture...

When dimensioning a classroom or teaching space, the best rule of thumb to produce both good sightlines and efficient layout is as follows: the space needs to be slightly rectangular, but NOT long and narrow. If X = 1, then Y should = 1.2 ideally, and no more than 1.5. Consider a comfortable space of 12 sqft. per student so if you have 6 students in a classroom then 72 sqft. + teaching space and walking space (60 sqft. or more) so say roughly you need 130 - 140 sqft. of space per class.