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[quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous]I think in MS and HS it gives kids too many opportunities to be lazy and turn in work late.  No firm deadlines is terrible for teens.[/quote]

You are blaming "rolling grade book" for something that is a separate policy decision (re: how long students can turn in late work).  That is not a feature of a rolling gradebook.

[b]A rolling gradebook means all tests have equal weight[/b] -- regardless of WHEN in the year or which quarter the test was given.  Rolling gradebook is more accurate and fair to students.

Policies about late work are separate from the policy to use a rolling gradebook.[/quote]

That's not how it works mathematically - the first grades have the most weight and the later grades have lower weight and less impact on the final grade.  For example, when you average 3 numbers, each number is worth 33% of the total.  When you average 8 numbers, each number is only worth 13% of the total.

A four quarter system makes each quarter have equal weight.  [/quote]

Your logic is wrong.  Please ask someone who understand math to explain it to you.

[/quote]

It's not logic, it's math.

While the end grade, at the end of the year, weighs every grade the same, during the year, the initial grades start out weighing more heavily, good or bad.  And the grade after the first quarter is harder to change, up or down, in a rolling grade book.

This effect is psychological, as well as mathematical.  Kids aren't robots, kids are people.  Is this another attempt to try to reduce kids' importance placed on grades?  [/quote]

At the middle of the year and the end of the year, and all points in between... whenever you want to look at the grades accrued... all tests will have EQUAL value.  That's how a rolling gradebook works.

Yes, it is a mathematical fact that when there are only TWO tests being averaged, each one will count 50% toward the final grade.  And yes, when there are EIGHT tests being averaged, each one will count 12.5% toward the FINAL grade.  But, by your twisted logic, you are comparing the weight of a test at the end of the year (larger number of tests) to the weight of a test at the beginning of the year (when there might be only one or two tests).  You can't compare the weight of a test in Sept. vs. the weight of all tests in May and then conclude that tests from the beginning of the year count more than tests at the end of the year!

ALL TESTS COUNT THE SAME TOWARD THE FINAL GRADE.

Your logic is like the people who see that candidate A has 75% of the vote 10 min. after the polls close and they start celebrating ... ignoring the fact that only 5% of the vote has been counted.  [/quote]

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