Why are CRT test results different on another website for the same school?

results reported on www.cyberhomes.com/schools-henderson-nv/franklampingelementaryschool/51473.aspx for Lamping Elementary are different than the result reported on greatschools.net www.greatschools.net/modperl/achievement/nv/233#crt_summary

I thought the first site gets it's info from greatschools.net, so the difference in test result reporting is confusing.

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