In addition, this significance of grade level disappeared on adding the variables "anti-gingivitis", "halitosis prevention" or "tartar control" alone (data not shown).
While it is unclear exactly when and why "E" grades disappeared from the letter grade scale, it seems possible that this push to use fewer categories resulted in an "A"–"F" scale with no "E" ("F" being retained, since it so clearly stood for "fail").
If too many middle or senior grades disappear, the numbers may be OK but the skill mix is diluted".
You'll be amazed at what you can learn when the desks and grades disappear.
All records of the prior grade then disappeared from the district's central data system, according to school site administrators, making it difficult to track such remediation in order to be fully accountable. .
It was all but confirmation of what relatives, neighbors and detectives say they had suspected since Ms. Nichols, a popular first-grade teacher, disappeared in 1985: that her husband had killed her.
The association between LSA and any-grade NAFLD disappeared after further adjustment for body mass index or waist circumference, whereas the association between LSA and moderate or severe NAFLD remained statistically significant (ORs (95%CI), 2.01 (1.07 to 3.78) and 2.06 (1.09 to 3.87), respectively, both p=0.01).
But despite the oft-cited study on the third-grade disappearing act, which is based on standardized test scores on math and other subjects, evidence of the benefits of preschool is well-documented and persuasive.
Approximately 90% (53/60) of grade ¾ neutropenia disappeared after the interruption of co-trimoxazole and only seven women had to stop ZDV owing to neutropenia.
Ms. Nichols's identity was confirmed on Monday through dental records, partly answering the riddle of what became of a well-liked first-grade teacher who disappeared a few days before Christmas in 1985.
OVK showed small iatrogenic short-term effects on optimism, active coping, social self-efficacy, and school grades, but these disappeared over time.
