Data Scientist 
Member since May 11, 2017


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Re: “Charleston County Schools surprises teachers by reducing job security

Education is being killed by administrators improper use of data to determine outcomes for students. Dorchester II gave their baseline assessment on pencil and paper at the beginning of the year and switched to computerized testing for the end of year assessments for 2nd grade students. How can you ever expect to get a representative sample of data when you change the method of testing?
Education companies misrepresent their testing and data solutions as an all-in-one solution to assessing students and teachers and districts continue to fall for these falsifications.

Some Basic Statistical and Common Sense Problems:
1) Proper sample size is a MUST.
2) You cannot change the method of scoring and expect consistent results.
3) A student who chooses to score a '0' on a standardized test should not be included in small data samples.
4) Having standardized tests that are longer than the MCAT, LSAT or SAT for 8, 9 and 10 year old children is insane.

Increased use of standardized testing data could be a huge boon for public education. Data could be used to better identify at risk children through attendance and behavioral data and assess intervention strategies to help these kids and families (parenting classes, earlier emotional/behavioral diagnoses). We could find ways to sort students into classes by their ideal learning styles and use different instruction methods with different students.

Unfortunately, poor methodology and over-reliance on insufficient assessment algorithms for an overly large portion of job evaluations is tarnishing a potentially useful method of improving our educational outcomes. Even worse, the extra work that these poorly designed methods are placing on overworked, underpaid teachers are driving the best educators out of the classroom into administration or other professions.

17 of 17 people like this.
Posted by Data Scientist on May 11, 2017 at 1:30 PM
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