I'm thinking of being a teacher as well, in all honesty you don't have much to worry about, the hardest part is obviously getting the job the economy is turning around, which will bring happy times which= babies= need for more teachers because there are more kids, for the next few generations the population will be getting larger, but each age group will stay about the same size, which isn't a bad thing, teachers leave so new ones need to come in, and still most schools are expanding so don't worry too much