• Standards in high school will become ever more stringent. Advanced courses and electives are made available to students, and teachers are looking forward to what your teenager's professors would expect from him in college. He will be expected to use logic in all of his courses (and in his personal life). Adolescents are able to think logically by combining the information they already possess (My mom doesn't like it when I come home later than I said I would) with new knowledge (I'm stuck in traffic, so I won't arrive until at least 30 minutes after my curfew). Of course, this logical leap doesn't always result in success (instead of a phone call, you'll probably hear this when you catch him trying to sneak in: "God, I'm sorry, Mom. Don't make such a big deal out of it"), but at least you know that he's cognitively capable.
• His writing should also be improving - it should be grammatically correct and coherent to the average reader - as should his presentation skills. Teachers will often assign projects in which your teen will have to speak in front of the class.
More skills and milestones: