Idaho can develop effective non-Common Core standards for mathematics and English/reading if its Legislature requires the development of K-12 standards in mathematics and in English/reading with the following features and guiding policies:
Standards for all basic arithmetical operations (addition, subtraction, multiplication, short and long division) and standard algorithms are taught at the same grade levels as in Singapore Math’s original series for the elementary grades. Here are articles about the original Singapore Mathematics program for K-5/6 after it began to be taught in 3 elementary schools in the North Middlesex Regional School District in Massachusetts:
PR News Wire
Singapore math study
Standards that enable all children in public elementary schools to be prepared via their mathematics curriculum to enroll in and complete a traditional Algebra I course in grade 7 or 8 before going on to advanced science and math in high school.
Standards/lessons from Dolciani-authored or co-authored mathematics textbooks in grade 8 and above, where possible.