The Common Core State Standards Initiative is an educational initiative, from 2010 currently adopted and practiced by 41 states, that details what K-12 students throughout the United States should know in english language arts and mathematics at the conclusion of each grade level. Above are the links to ID specific Common Core ELA and math standards. Click on the respective buttons to read through them at your leisure. If you have further time, I highly recommend visiting here to see the timeline of how the standards were developed. You can read about who wrote the math standards or click here to see a complete list of everyone involved in writing standards for math and ELA.
The "I Can" statements are friendly written versions of the Common Core State Standards and are a helpful tool to help with communication and goal setting with students. I recommend checking out the links above to see what your child will be learning this school year.
Above are links to the state of Idaho's science and social studies curriculum.. Please feel free to read through them in order to better understand what your child will be learning this year in second grade.