1. **State the problem:** We are given that 38% of the students are girls and the number of boys is 1023. We need to find the total strength of the school. 2. **Define variables:** Let the total number of students be $T$. 3. **Express given information mathematically:** Girls are 38% of $T$, so girls = $0.38T$. 4. **Number of boys:** Boys = $T - 0.38T = 0.62T$. 5. **Given boys count:** $0.62T = 1023$. 6. **Solve for $T$:** $$ T = \frac{1023}{0.62} $$ 7. **Calculate:** $$ T = \frac{1023}{0.62} = 1650 $$ 8. **Answer:** The total strength of the school is 1650 students.