We had similar problems in the first grade, but the teacher and we worked together to figure out what was wrong. In nativa language classes and math classes, he completed his assignments too quickly and was "bored", and in Romanian class (Romanian is the official language of the country, so it's mandatory) he didn't understand what was being said and was "bored". He disturbed his classmates because he had nothing to do. The whole thing was solved by giving him additional math assignments (different and more than his classmates) and working on them. Alternative math, because he likes it and is not willing to think according to "templates".