Can anybody help with run-on and comma splice sentences?

Question

I have difficulty to locate run- on and comma splices in these sentences.

Teachers at stone Mountain State College give higher grades than teachers at 12 of the 19 other colleges in the state college system, according to a recent report from the state Institutional Research Committiee. This report showed that more than one- third of the undergraduate grades awarded in the spring semester 2005 were A's only 1.1 percent were F's. The percentage of A's awarded to graduate students was even higher, almost two-thirds were A's.

Answer 1

Teachers at Stone Mountain State College give higher grades than teachers at 12 of the 19 other colleges in the state college system according to a recent report from the State Institutional Research Committiee. This report showed that more than one-third of the undergraduate grades awarded in the spring semester 2005 were A's and only 1.1 percent were F's. The percentage of A's awarded to graduate students was even higher; almost two-thirds were A's.

Answer 2

Run on = Teachers at stone Mountain State College give higher grades than teachers at 12 of the 19 other colleges in the state college system, according to a recent report from the state Institutional Research Committiee.

TOO many ideas in one sentence and awkward structure.

Comma splice = The percentage of A's awarded to graduate students was even higher, almost two-thirds were A's.
TWO complete sentences joined by a comma.

Answer 3

Teachers at Stone Mountain State College give higher grades than teachers at 12 of the 19 other colleges in the state college system, according to a recent report from the state Institutional Research Committiee. This report showed that more than one-third of the undergraduate grades awarded in the spring semester 2005 were A's. Only 1.1 percent were F's. The percentage of A's awarded to graduate students was even higher: almost two-thirds were A's.