In Spring 2012 MATH 1271 Lec 010 and 030 (my lecture sections), I
taught by "flipping the classroom", a teaching technique in which
      lectures are viewed on video outside of class
while
      skill-training is done in class.

That semester, 238 of my (Lec 010 and 030) students took the final
exam. Including all the lecture sections, 547 students took the final
exam.

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Summary

The first column is a grade range. The second column is the percentage
of students in Lec 010 and 030 whose final exam letter grade is in
that range.  The third column is the percentage of students in all
lecture sections whose final exam letter grade is in that range.

                   Lec 010,030       All
                   -----------      ------
    A- or above      26.89%         23.40%
    B- or above      52.52%         55.76%
    C- or above      86.55%         87.02%
    D  or above      92.86%         93.78%

The differences are very small. A few more grades of A and A-, a few
fewer of B+, B and B-.

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Students in good standing

In 32 lectures and 11 recitations, a quiz was given. Let's define a
student to be "in good standing" if he/she attended at least 40 of
those 32 + 11 = 43 classes, receiving a nonzero grade on those
quizzes. In Lec 010 and Lec 030, of the 238 students, only 123 of them
were in good standing. Among those 123, we have the following
statistics:

The first column is a grade range. The second column is the percentage
of students in good standing whose final exam letter grade is in that
range.

    A- or above      34.15%
    B- or above      66.67%
    C- or above      93.50%
    D  or above      98.37%

For flipping the classroom to be effective, it is paramount that
students watch the recorded videos, and attend class.

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Raw data for Lec 010 and 030

The first column is a letter grade on the final exam. The last column
has the percentage of students in Lec 010 and 030 with that grade.

    A     33/238 = 13.87%
    A-    31/238 = 13.03%
    B+    13/238 =  5.46%
    B     33/238 = 13.87%
    B-    15/238 =  6.30%
    C+    17/238 =  7.14%
    C     45/238 = 18.91%
    C-    19/238 =  7.98%
    D     15/238 =  6.30%
    F     17/238 =  7.14%

total             100.00%

-----------------------------------

Raw data for all lecture sections

The first column is a letter grade on the final exam. The last column
has the percentage of students in all lecture sections with that
grade.

    A      72/547 = 13.16%
    A-     56/547 = 10.24%
    B+     40/547 =  7.31%
    B      98/547 = 17.92%
    B-     39/547 =  7.13%
    C+     38/547 =  6.95%
    C      93/547 = 17.00%
    C-     40/547 =  7.31%
    D      37/547 =  6.76%
    F      34/547 =  6.22%

total              100.00%

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Raw data for students in good standing

Of the 123 students in good standing (as defined above), we have the
following statistics:

The first column is a letter grade on the final exam. The last column
has the percentage of students in good standing with that grade.

    A      22/123 = 17.89%
    A-     20/123 = 16.26%
    B+     10/123 =  8.13%
    B      21/123 = 17.07%
    B-      9/123 =  7.32%
    C+      9/123 =  7.32%
    C      19/123 = 15.45%
    C-      5/123 =  4.07%
    D       6/123 =  4.88%
    F       2/123 =  1.63%

total              100.02%