1 G20 The United States has ratified or acceded to fewer key human rights treaties than all other countries in the G20 group. 2  3 The Convention on the Rights of the Child has been ratified by all but three countries in the world: the United States, Somalia, and South Sudan.
If you can swing the extra cost, Mathnasium may be a better fit. Their tutors actually sit down and work with your child, not just correct worksheets done at home. The Kumon price range is somewhere around $100 per month, whereas Mathnasium is closer to $300 per month (just ballparks). OP here, sounds like my DS is more of a Kumon candidate actually. He's in 5th.
The Mathnasium method is a way to teach math that is used in the Mathnasium learning centers. These independent centers exist across the country and abroad as well. The method has been in use over 30 years and includes over 5000 pages of material.