This study describes the process of defining a hypothetical learning progression (LP) for astronomy around the big idea of "Solar System formation." At the most sophisticated level, students can explain how the formation process led to the current Solar System by considering how the planets formed from the collapse of a rotating cloud of…

Seventy secondary mathematics pre-service teachers from two universities were assessed on their content knowledge, vocabulary knowledge, and their perceived confidence in teaching the content addressed on the eleventh grade state assessment. The results indicate the pre-service teachers had significant content weakness in data analysis, algebra,…

While college enrollment rates have increased over the last 40 years, gaps still exist across groups. College enrollment rates are lower for high school graduates whose parents have not attended college, those with low-incomes, as well as Black and Latino/a students than for other high school graduates. One source of differences across groups in…