Pre-KG (pre-kindergarten) is typically designed for children between the ages of 4 and 5 years old. This is the year before kindergarten and is often seen as a bridge between early childhood education and primary education. Pre-KG programs may vary in length, but they generally focus on preparing children for kindergarten by introducing them to more structured learning experiences, including early literacy and numeracy skills, social skills, and problem-solving. However, the exact age range may vary depending on the specific Pre-KG program and its curriculum.