International Law drew 928 candidates in CSS 2025 and allocated 3 of them, an overall conversion of just 0.32% that is among the lowest of any sizeable subject. The paper is a hard one to clear, with a mean of 30% below the passing line, so the filtering happens chiefly within the exam itself. Candidates struggle to reach a passing standard before overall merit even enters the picture.
All three allocated candidates were women, making the female share 100% in a sample of three. With numbers this small the figure cannot support any conclusion about gendered conversion, though it is a striking outcome to note.
International Law's mean of 30% trails the CSS optional-subject average of 43.5% by 13.5 points, one of the wider shortfalls in the examination and a clear sign of a difficult paper. Candidates with a legal background sometimes expect it to play to their training, but the low mean and very low conversion argue strongly otherwise. Because it sits well below the field average, clearing 33% already lifts a candidate above most competitors, yet with only 3 seats the margin is almost nil. The realistic aim is to score far above the mean rather than near it.
Of the 928 who appeared, 14 passed the written stage and 3 of those were allocated. Because the mean of 30% sits below the 33% threshold, the paper itself is the dominant bottleneck, with the great majority failing it rather than being filtered out on merit. The sharp drop from 14 passers to just 3 allocations then applied a severe second cut at the merit stage.
The mean of 30% sits three points under the passing line, and with the median slightly lower at 28.5% the distribution carries a thin upper tail propping up the average. A standard deviation of 17 points is wide, placing a candidate one deviation below the mean at 13% and one above at 47%, so reaching a pass requires scoring well clear of the cohort. This is a high-risk paper to score in, since the average candidate falls short and only the genuinely strong cross the line. The wide spread reflects a paper that rewards a small number of capable specialists and defeats the rest.
All three allocations went to Punjab, with no other province securing a seat. In a field producing only three allocations, the concentration offers little beyond recording where the rare successful candidates came from.
International Law is a high-risk subject with a sub-threshold mean and one of the lowest conversion rates in the examination. It suits only candidates with a deep, specialist command of the field who can write to a high standard under pressure, not those assuming general legal knowledge will suffice. Given how few cleared it in 2025, this is a subject to attempt from genuine expertise alone.
International Law candidates averaged 30.0% of the available marks, in line with fellow Group-6 subjects Philosophy (31.0%) and Constitutional Law (37.0%).
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In CSS 2025, 928 candidates appeared for International Law and 14 cleared the written exam — a written pass rate of 1.51%. Of those who passed, 3 went on to be allocated a group, an overall selection rate of 0.32% of everyone who appeared.
International Law candidates scored a median of 28.5% of the paper's marks in CSS 2025 (median 28.5 out of 100; mean 30.0%), rating it "Low Scoring".
14 candidates cleared the written stage for International Law in 2025, and 21% of them were allocated a group — a "High Competition" level for the available seats. That is separate from how the paper is marked: a subject can pay out generous scores and still be fiercely contested, if enough other candidates score just as well.
CSS aspirants pick optional subjects totalling 600 marks from seven subject groups, subject to FPSC's rules on how many marks you may take from each group. Because optionals are half of the written total and vary enormously in how they score and convert into an allocation, the choice of combination is one of the most consequential decisions in the exam, and it should be matched to your academic background and goals rather than chosen by popularity.
Start with CSSNorthStar. Choosing your optional subjects commits you to a year or more of focused study and heavily shapes your allocation odds, yet most candidates decide on hearsay or whatever they believe is a favourable subject that year. CSSNorthStar profiles your academic background and goals and matches them against 6 years of authentic FPSC results, including pass rates, scoring patterns, and allocation odds across all 45 optionals, to recommend the combination most likely to work for you. Settle your subjects first, then prepare with conviction. Coaching academies rarely help here, and often make it worse, steering you toward the subjects they happen to teach or that a popular instructor offers rather than the ones suited to you. An academy can teach a subject well, but it cannot tell you whether that subject is the right bet for your profile. Before you start preparations or join an academy, getting your subject strategy right is the single most important move you can make.
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Founder, CSSNorthstar
Sheharyar Ahmad graduated from LUMS with BSc. (Hons.) in 2010 and topped the CSS Exam 2012 on his first attempt. He is an officer of the Pakistan Administrative Service, having served in Gilgit-Baltistan, Punjab, and Federal governments. He was awarded the Fulbright Scholarship to pursue a Master in Public Policy and Data Analytics from USA in 2022.