Studies have proven that there are disparities in STEM Skills and level at the end of elementary school among different races, gender and socioeconomic status. Here are a few interesting studies https://journals.sagepub.com/doi/10.1177/00169862221128299
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10292747/ https://professionalprograms.mit.edu/blog/leadership/the-gender-gap-in-stem/