Is this grammatically correct? Analytics methods used to to evaluate the assessment results include item difficulty, item discrimination, and test-level reliability. Utliizing these methods ensures tests are reliable in their alignment with student learning outcomes and course objectives. Item difficulty calculates the proportion of students who answered each question correctly to determine if an item is too easy or difficult. The item difficulty index, also known as the P value, is a practical measure explained by Billings and Halstead (2020). The P value helps to determine how easy or difficult a test question is on a range of 0 to 1. A higher P value that is closer to 1 means a larger proportion of students answered the question correctly, therefor meaning it is an easier question. For example, a P value of 0.85 means 85% of students answered correctly. A P value closer to 0 means a smaller proportion of students answered the question correctly, therefor meaning it is a more difficult question. For example, a P value of 0.30 means only 30% of students answered correctly. It is important to have a wide mix of P value's for a reliable test, while also reevaluting questions with a P value too high or too low for revision. The formula for calculating the P value is P = R/T, where R is the number of correct responses, and T is the number of total students (Oermann & Gaberson, 2021)