Although teachers generally consider answering a question correctly as good behavior, blurting out answers is inappropriate. Children must learn order and discipline to help them function properly in society. Talking out of turn could possibly signify symptoms of attention deficit hyperactivity disorder (ADHD) or other problems. Consider other factors first -- such as the child's cultural background and home life -- before jumping to conclusions. Always speak with the child's parents, and suggest they seek a doctor, if you suspect ADHD afflicts the child. Never make a diagnosis yourself unless you're a trained medical professional.
Some students may exhibit blatant misbehavior, such as physical aggression toward their classmates. Do not take this behavior lightly, as it is potentially a manifestation of serious personal or psychological problems. Several factors may also contribute to this behavior, such as trauma, emotional abuse or ADHD. Be considerate of these issues when confronting the student or his parents about this misbehavior.
Children who might have ADHD may exhibit behaviors of distraction. In these cases, they may have difficulty finishing projects that other students finish easily. They may also be extremely forgetful, fail to make eye contact or look around the room a lot, when they should be focused on you. Again, these behaviors may be the result of several factors, so don't make a diagnosis. Instead, alert the child's parents about the problems.
Some children have the opposite problem of the ADHD inflicted children. Instead of speaking out of turn or too often, they may refuse to speak at all. Understandably, these children are shy or insecure. Being at a new school and away from home can be scary, but they must learn to speak in order to communicate effectively. To get the child to speak, make her silence her problem. Ask the child if she wants to play with the blocks or paint. If the child doesn't speak, she gets neither. Progress can take time, but it's important to refrain from being overly sympathetic or encouraging of the behavior.