Andhra Pradesh topped in terms of Gross Enrolment Ratio (GER) in higher education according to the All India Survey on Higher Education (AISHE).

Gross Enrolment Ratio (GER)
The Gross Enrolment Ratio (GER) is a statistical measure used to determine the percentage of eligible students enrolled in higher education institutions. It is calculated by dividing the total number of students enrolled in higher education by the eligible population in the corresponding age group and multiplying the result by 100.

Importance of GER
GER is an important indicator of the accessibility and inclusivity of higher education in a particular region or country. It reflects the level of participation of the population in higher education, indicating the progress and development of the education system.

Andhra Pradesh's Achievement
According to the All India Survey on Higher Education (AISHE), Andhra Pradesh has achieved the highest Gross Enrolment Ratio (GER) in higher education among all Indian states. This indicates that a significant proportion of eligible students in Andhra Pradesh are enrolling in higher education institutions.

Possible Factors for Andhra Pradesh's Success
There could be several factors contributing to Andhra Pradesh's achievement in terms of GER in higher education. Some of these factors may include:

1. Government Initiatives: The state government of Andhra Pradesh may have implemented various initiatives and policies to promote higher education and increase enrolment rates.

2. Infrastructure Development: Adequate infrastructure facilities in terms of colleges, universities, and educational institutions may have been developed in the state, making higher education accessible to a larger population.

3. Awareness and Outreach Programs: The state government, along with educational institutions and other stakeholders, may have conducted awareness and outreach programs to encourage students to pursue higher education and provide information about available opportunities.

4. Scholarships and Financial Support: The provision of scholarships and financial support to deserving students may have played a crucial role in increasing enrolment rates in higher education.

5. Quality Education Institutions: The presence of reputed and quality education institutions in Andhra Pradesh may have attracted students from within the state and even from other regions, contributing to a higher GER.

6. Socio-economic Factors: Socio-economic factors such as literacy rates, income levels, and social development may also influence the GER in higher education. Andhra Pradesh's relatively favorable socio-economic indicators may have contributed to its higher GER.

In conclusion, Andhra Pradesh has achieved the highest Gross Enrolment Ratio (GER) in higher education among all Indian states according to the All India Survey on Higher Education (AISHE). This accomplishment could be attributed to various factors such as government initiatives, infrastructure development, awareness programs, scholarships, presence of quality education institutions, and socio-economic factors.