ADHD is considered to be a 20th century phenomenon affecting mainly children from developed nations. The aim was to assess the effectiveness of nursing intervention package in improving the knowledge and reported practice of parents and attention, scholastic achievement & behavior of children with Attention Deficit Hyperactivity Disorder (ADHD). Quasi-experimental One group pre-test and post-test design was used. The study was conducted in selected schools of Kerala. There were 119 primary school children with ADHD between the age group of 5–12 years, their parents and teachers as study subjects. The tools were used are, Structured questionnaire to assess socio-demographic data and both knowledge and Reported Practice, Modified Vanderbilt assessment Scale (Parent & Teacher) Modified Home/School situations questionnaire (Parent & Teacher), Meditation Compliance Checklist, and Nursing intervention package. The study was carried out in 5 phases. Started the assessment with the first phase (Pre-test) and with the second phase the researcher conducted Posttest1followed by interventions as planned and continued till the 5th phase of intervention and Posttest 4. The results showed that the difference showed a marked improvement in the knowledge and practice score of parents. Regarding the effectiveness, in knowledge and practice score of the respondents before and after intervention is significantly different. There is a significant difference in the mean score & ‘t‘ value which reveals an increase in attention, scholastic achievement, and in behaviours the Home/ school assessment scale in children with ADHD. There is an association between reported practice of parents and demographic variables like sex, age in years, type of family and income per month. There is also an association between reported practice of parents and scholastic achievement. Scholastic achievement is increasing with increase in attention and scholastic achievement is decreasing with decrease in attention. The desired behavior is increasing with increase in attention and behavior is decreasing with decrease in attention in the child as per the teacher assessment. The result also showed that the meditation has great impact in different areas if thesubject is compliant to it. 

Keywords: ADHD; Scholastic Achievement; Behaviors; Attention; Meditation.