which of the following changes occured to public schools in the united states between 1870 and 1920? pick 2

women became principals
enrollement numbers tripled
schools hired different teachers for each grade
the number of high school nation wide grew to 2000
children of all social clasess went to school

The two changes that occurred to public schools in the United States between 1870 and 1920 are:

1. Enrollment numbers tripled: This refers to a significant increase in the number of students attending public schools during this time period.
2. The number of high schools nationwide grew to 2000: This reflects the expansion and establishment of high schools across the country during this time.

The two changes that occurred to public schools in the United States between 1870 and 1920 are:

1. Enrollment numbers tripled: During this period, there was a significant increase in the number of students attending public schools. This can be attributed to the implementation of compulsory education laws and the growth of urban populations.

2. Children of all social classes went to school: Prior to this period, education was often only accessible to children from wealthy or privileged backgrounds. However, between 1870 and 1920, public schools became more accessible and open to children from all social classes, providing more opportunities for education and advancement.

To determine the changes that occurred to public schools in the United States between 1870 and 1920, you can analyze the provided options and cross-reference them with historical information.

1. Women became principals: To check if this change occurred, you can research the history of women's involvement in education during this time period. Look for information on the first female principals in American public schools and if there was a notable increase in their representation.

2. Enrollment numbers tripled: To verify this change, you can investigate historical data related to school enrollment in the United States between 1870 and 1920. Search for reliable sources that provide information on public school enrollment during this period and compare the data from the beginning and end of this timeframe.

3. Schools hired different teachers for each grade: To determine if this change occurred, you can examine the evolution of teaching practices in American public schools during the given time period. Look for any shifts from a single teacher instructing multiple grades to specialized teachers assigned to each grade level.

4. The number of high schools nationwide grew to 2000: You can verify this by researching the history of high school establishment in the United States. Check for information on the growth of high schools and the number of high schools in the country during the said timeframe.

5. Children of all social classes went to school: To confirm if this change happened, you can study the history of education policies and access to education for various social classes during the given time period. Look for information on reforms, legislation, or movements that aimed to provide education for children from all social classes.

By conducting thorough research using credible sources, you can accurately determine which two changes occurred to public schools in the United States between 1870 and 1920.