We already supposedly have lotteries for that reason, and you see how well that works...Since everything you disagree with is automatically Obama's fault.
How about this, and this is just a suggestion so bare with me, We could take all that millions of dollars it would take to post armed guards at every already under staffed under budgeted school, thanks to some of the laws passed in the Bush administration, and use it for prenatal health care and measures to ensure women have equal protection in jobs when pregnant, and paid maternal leave, and paid paternal leave.
Or, and this is just another thought, put the money into the schools for things like teachers and books to better educate students, so they can grow up to be more productive adults less likely to be on the streets committing crimes.
But then that would mean a compromise.