Attention deficits must be assessed and specific problems identified. Some possible tips to improve attention during the classes to suggest to your child are listed below.
1.  Make sure child resolves any issues with you or the classroom as much as possible before school and suggest to the child that he leave these problems at the door of the class and think or talk about them with you at a later time. 
2.  Make sure your child has organizational materials for his class such as calenders, notepads, dividers, stickies, pens and pencil available. 
3.  Be sure to check the vision of hearing with a professional such as audiologist, otologist or opthamologist prior to classes to be sure all his sensory awareness is functioning as well as possible of the information the teacher presents. 
4.  Also, general physical including dental and medical evaluation to make sure these issues do not interfere with learning new things in the classroom. 
5.  Also, make sure he goes to sleep earlier enough to get at least 6-8 hours or more sleep per night. Sleeplessness can effect the childs' ability to focus and attend in the classroom. 
6.  Once he is in the class make sure to remind him to take notes  on lecture including a special pad or calender for assignments. 
7.  If the child has a tendency to perform any nervous habits or talk to much provide them with a competing response such as hands in pockets or playing with a bracelet to prevent the inappropriate behavior from interfering with attention to the teacher. 
8. Encourage the child to review what the teacher says to himself before leaving the classroom and ask any questions before leaving the class. This will assist with retention of the information learned and assure that he gets any information missed before leaving the classroom.
9. Review notes daily or when possible to assure they are organized and all assignments are completed. Provide a strong daily reinforcer  selected by the child for good behavior or no reports of problems or missed homework daily. 
The above tips will assist your child to optimize his attention and reduce his problems  in attending during the classroom! 

Parents or caregivers can use every activity during the day for them to  learn something. For skills that the child knows it may be just a matter of inservicing or teaching him a skill. For children that do not have the skill it may be he needs some demonstrations or prompting and fading to learn the skill. 

Parents might begin by designing a schedule or writing down what they will do for the day. For example in the morning preparing breakfast, getting dressed and making lunch. The child can be motivated and prompted to help perform these skills. If he does not know how to make a sandwich you can prompt him with verbal instruction or demonstrate how to make a sandwich. All of the skills in the morning can be taught rather than doing them for your child and a reinforcer after completing all these task such as music or television can be given to maintain the skill. Social praise should also be paired with the skill. The advantage to the parent or caregiver is that if you teach the child to do these skills then the parent or caregiver has less to to during the morning and more time for getting themselves ready.

This type of training and reinforcement should be done wherever the child goes during the day with the parent or caregiver.  For example, if you go to the gas station they might help with opening the gas cap or holding the handle to give the gas.  If you go to a bank the child might be asked to get a deposit slip for you, open a door, hold your purse while you are making a deposit. 

If you count every opportunity during the day you have to teach your child it will probalby be a very large money. If you wait to teach them things after work or at night you will have a couple of hours. If you teach them skills throughout the day his progress in learning basic skill will be multiplied significantly! Before you know it your child will be the helpful, independent person you always hoped he would be!