: Analyzing words by their parts—prefix, root, suffix, and ending.

: Identifying sounds, vowels vs. consonants, and correct stress placement.

The diagnostics for 4th-grade Russian Language are standardized assessments designed to evaluate student mastery of the primary school curriculum. For the 2025–2026 academic year , these diagnostics typically occur between April and May . Core Content of MCKO Tests

: Understanding sentence structure, identifying subjects and predicates, and using correct punctuation.

: Applying spelling rules for unstressed vowels, silent consonants, and the use of soft/hard signs (

: Recognizing nouns, adjectives, pronouns, and verbs, including their grammatical features.

The diagnostic covers several key areas of the language, focusing on both theoretical knowledge and practical application: