Need to sleep

Sleeping is lacking for Most of American children lack enough sleep. Experts says that children from the age of 5 to 12 should sleep for at least between 10 and to 11 hours (every night), but the National Sleep Foundation has just announced that the children just only sleep for 9 hours on average. Most of people think that it is not a big deal to sleep more for an extra 30 minutes. In fact, it can make a big differences. How much children sleep can affect their studies. Children who take have a enough rest get good grades from in math(s) and writing, whereas sleep-deprived children has a have difficulty in concentrating on their classes, resulting in getting bad grades. Also, as sleep deprivation has effects on feeling and behavior, it is safe to say that children lacking sleep throw more tantrums more compared to children who have a enough sleep.

Check your subject/verb agreements.

Very good!