Dyspraxia may not be diagnosed immediately. Parents may notice that developmental milestones (crawling, sitting up, or walking) are significantly delayed, which can be an early indicator of dyspraxia. However, the classroom teacher may be the first to notice a child's continuing difficulties. The affected child often falls behind the rest of the class in reading, writing, and mathematics. Standardized tests comparing a child's skill level to what is considered normal may be used for an accurate diagnosis.