My son is going to take a standard test soon. But he need a big improvment on "English-Language Arts". Is there any online or downloadable practice worksheet ?

I would say go to Borders or Barnes and Nobles, they have great workbooks and test prep for all grades in all subjects. That way he can practice doing a test and know some of the material better.

http://www.internet4classrooms.com/skills_4th_original.htm

This site may help.

I would suggest running out to a parent-teacher store or a borders book store and picking up an actual test prep book for fourth grade though. They are formatted to really help the student with what can be expected on the actual test. Additionally, run a search on your state's end of year testing for fourth grade and see if they don't have practise tests on line.

Please check out this website..it just launched and it will help you alot.

http://talktrain.bptechonline.com/home/