- Teacher recruitment. More teachers and administrators will need to be hired for the new schools being built. Given funding situations, difficulties in getting certified (actually this varies. Some places are real permissive in giving out "emergency" credentials while making it hard on those who pursue the license by actually getting a teaching degree, for instance), NCLB, just the challenge of finding good teachers overall, this is definitely a challenge.
- Helping kids who don't speak English. A large factor in the larger number of students is immigration. One additional consideration, which people who are anti-immigrant tend to forget, is that immigrants have children too. It is not so much children who may be here illegally, but children born here (who are thus citizens) and children of immigrants who are actually here legally too. And we are not just speaking of immigrants from Mexico and Latin America, but from Asia and other places as well.
- Managing class sizes. I think this is self-explanatory.
- Finding financial aid for future college students. The article explains this nicely as well. Part of the situation is that, unlike the boomer generation, people today need and expect a college degree to have a good job. Someone has to pay for all that tuition.
The various projections are based on Census data, which can be found on the link below. The article provided the link: