Exam scores in Dien Bien, Kon Tum, Lai Chau have abnormalities

"The goal of cheating on exams is to increase scores for university entrance exams if not counting other goals and to increase scores for many candidates (about 1% or more - Ha Giang is 2%). With these assumptions, cheating on exams with a large enough number will reduce the number of low-scoring exams and increase the number of high-scoring exams, leading to a significant increase in the rate of high-scoring exams" - Mr. Tung acknowledged.

Analyzing all the 2018 high school exam data (about nearly 1 million candidates with more than 5 million exams), Mr. Tung identified some unusual signs in some places.

Analyzing the percentage of high-scoring exams for the 3 main blocks, including only multiple-choice exams for blocks A, A1 and B; Mr. Tung divided them into 3 high-scoring levels: 24, 25.5 and 27, corresponding to the average scores of each subject being 8, 8.5 and 9.

"You should only choose from 8 points or higher because in multiple choice tests, a score of 7 is not considered high. A score of 7 in multiple choice tests is only equivalent to a score of 6 in essay tests (the candidate gets 6 points + 1 point from the remaining 4 points randomly)."- Mr. Tung explained.

- First of all, about block A. The 3 graphs (Figure 1, Figure 2, Figure 3) show the percentage of candidates achieving 24, 25.5 and 27 or higher for the whole country and 63 provinces and cities.

The horizontal red line is the national level. Through the graph, it is clear that Ha Giang is a locality with a very high rate in all 3 thresholds.

Some "educational" localities also have higher than average rates.

But in this exam block, two provinces, Kon Tum and Dien Bien, emerged. Meanwhile, with a graph of 27 points or more, Hoa Binh is the province that appeared and was just mentioned by the press.

In block A1 (picture 3, picture 4), Ha Giang is still the outstanding locality, however in this exam block, Lai Chau province has appeared and emerged two places: Son La and Hoa Binh.

Thus, for block A1, the Top 4 localities with the highest percentage of candidates with 25.5 points or more nationwide are Ha Giang, Lai Chau, Hoa Binh, Son La, respectively. The Top 3 localities with the percentage of candidates with 27 points or more are Ha Giang, Son La, Hoa Binh.

In block B (figure 5, figure 6), Kon Tum and Dien Bien are taking the championship in the percentage of candidates with high scores.

These are the two localities with the highest percentage of block B candidates scoring 24 points or more.

Meanwhile, in this exam group, the localities with the highest percentage of candidates with 25.5 points or more are Ha Giang, Lai Chau, Kon Tum and Dien Bien. At the score level of 27 points or more, the localities with the highest percentage of candidates with 27 points or more are Dien Bien, Ha Giang, Kon Tum and Son La.

According to Mr. Tung, if we analyze the test scores for each subject, we will demonstrate the abnormalities more specifically.

"So now Ha Giang has been announced by the Ministry of Education and Training to have violations, standing out in all 3 groups A, A1, B. Son La appears in group B, A1 is being inspected by the Ministry. Hoa Binh province has been mentioned in the press for irregularities in exam scores. It is necessary to consider more provinces such as Lai Chau (appearing in group A1 and group B); Kon Tum, Dien Bien (looming in group A and really standing out in group B)" - Mr. Tung suggested.

As for the two localities of Lao Cai and Bac Lieu, Mr. Tung said that through analysis, there were no outstanding signs here, so if there were any, they would only be on a small scale.