Baseline and Endline Surveys: A Practical Guide to Measuring Programme Impact

Surveys & Data - 2026-11-13 - ATTPL EMS

Survey team reviewing village data charts on a laptop under a tree in rural Rajasthan

Every development programme claims to make a difference. Baseline and endline surveys are how organisations show what actually changed — and what did not.

What baseline and endline surveys are

A baseline survey measures the situation before a programme starts. An endline survey measures the same indicators after the programme. Comparing the two shows the change over time. When designed carefully, they help CSR teams, NGOs, panchayats and government departments learn, report and improve.

Choose the right indicators

Link indicators directly to programme objectives
Use clear definitions that can be measured the same way twice
Mix outcome indicators (for example, school attendance) with output indicators (for example, number of trainings)
Keep the list short enough for a reasonable interview length

Sampling and comparison groups

Use a sample large enough to detect the change you expect, drawn randomly from the target population. Where possible, also survey a similar comparison group that does not receive the programme, so that changes due to other factors — such as a good monsoon or a new government scheme — are not wrongly credited to your work.

Timing and consistency

Conduct the baseline before activities begin and the endline after enough time for change to happen. Use the same questionnaire, definitions and season where possible. Digital collection with validation rules improves consistency; see our CAPI data quality guide.

Analyse and report honestly

Report changes with sample sizes and confidence, explain limitations, and share findings with the community and stakeholders. Negative or unexpected results are valuable for learning. Good questionnaires start with our survey questionnaire design guide.

Support for impact studies

ATTPL EMS designs and conducts baseline, midline and endline surveys with trained field teams. For CSR programme design, see ATTPL Consultancy, and for partnerships, contact ATTPL HOLDCO.

Frequently asked questions

What is the difference between a baseline and an endline survey?

A baseline measures conditions before a programme; an endline measures the same indicators after it, to show change.

Why use a comparison group?

To separate the programme's effect from changes caused by other factors.

How long after the programme should the endline be done?

Once enough time has passed for the expected outcomes to appear, using the same tools and, ideally, the same season.

Sources: Ministry of Statistics and Programme Implementation, Ministry of Corporate Affairs – CSR