Why ISRO doesn't try to popularize space science among school & college students?

ISRO does try, but what it is doing to popularize space science is clearly not enough for various reasons that need not be elaborated here. Most of the attempts till date, some of which I have highlighted below, have been limited to the southern states of India, which are also the home of major ISRO centres. -The http://www.worldspaceweek.org/wsw/index.php is celebrated by various ISRO centres, but the reach is mostly limited to the home state/city of the specific centre. VSSC, Trivandrum WSW celebrations in 2012 had scientists and engineers from VSSC traveling to various parts of Kerala to give lectures to school students. -VSSC also takes part in Thrissur Pooram (Google it) which as the name says created awareness only in Thrissur and nearby towns. -ISAC Bangalore recently celebrated the National Science Day by conducting a quiz programme for school students in Bangalore. -Lots of undergraduate and graduate engineering students come to VSSC to do projects, but sadly, like I said before, they belong to Kerala. In fact, if one wants to apply through open category to VSSC for a project, the first rule is that they have to  be from a college in Kerala. While this is obviously unfair, I am in no position to give an answer on ISRO/DOS's policies and regulations. -IIST @ Schools http://www.hindu.com/2011/02/05/stories/2011020556530400.htm) is a programme run by IIST to popularize space science among students of schools mostly in Kerala. -VSSC has a wonderful space museum inside what was once a church (The birthplace of India's space programme) which is open to public, but I am not sure of the procedure. I think one needs to go through the Public Relations Office of VSSC to get passes for the museum, unless you are related to a VSSC employee. PS: To be frank, the ISRO website is not good and has immense scope for improvement. Interested people may please use the feedback link at the bottom of the website, comments in which are limited to 1500 characters.

At SDSC SHAR,every year GSLV award function is conducted to teach 10th class children about space and they get a tour of SDSC. their expenses for travel from their place to Sriharikota and back are paid by the centre. http://www.shar.gov.in/content/world-space-week

There are few communities that have taken the initiative of spreading awareness of the significance of the missions of ISRO, their effects and long term impact as we all know there is a big disconnect between ISRO and a common man. https://www.facebook.com/fslovesisro http://indiaeducationdiary.in/Shownews.asp?newsid=31159 http://www.theindianrepublic.com/nation/function-space-initiates-awareness-campaign-isro-100048140.html