The West African Examination Council, WAEC has released the 2018 ranking of all the 36 States plus the Federal capital, Abuja in Nigeria with Abia still topping the chart.
In recent times, the first position has always revolved around Abia and Anambara  States and Imo with Rivers getting close too.

Nevertheless according  to 2018 WAEC ResultRivers State ranked 4th Position.
Due to various cases of examination malpractice detected during and after the conduct of the examination, the examinations body says it is withholding the entire results of some 26,434 candidates pending .
The Council in a statement signed by the Head of Public AffairsMrs Agnes Teye-Cudjoe, at the main headquarters, warned that the withheld results will be cancelled if found culpable, or released if otherwise.
Below is the detailed statistics of WAEC 2018:
A total of 316,999 candidates entered for the examination. This figure is 9.6% higher than the 2017 candidature of 289,207. The 2018 entry figure was made up of 158,550 (50.02 %) males and 158,449 (49.98%) females. The examination was conducted for 946 participating schools. A total of 1,378 (0.43%) of the candidates who registered were absent from the examination.
The performance of the candidates in regard to the four core subjects are as follows:
English Language 147,232 {46.79%) obtained A1-C6; 99,402 (31.60%) obtained D7-E8 while 68,002 (21.61%) had F9;
Mathematics (Core): 120,519 (38.33%) obtained A1-C6; 94,607 (30.09%) obtained D7-E8 while 99,275 (31.58%) had F9;
Integrated Science: 158,691 (50.52%) obtained A1-C6; 109,069 (34.72%) obtained D7-E8 whilst 46,367 (14.76%) had F9;
Social Studies: 230,141 (73.27%) obtained A1-C6; 46,464 (14.79%) obtained D7-E8 whilst 37,494 (11.94%) had f9
Based on the provisional results, the performance at Al- C6 in Social Studies showed a marked improvement over that of 2017 (52.25% to 73.27%), while Integrated Science recorded a slight improvement (43.66% to 50.52%).
On the contrary, Mathematics (Core) showed a drop in performance from 2017 (42.73% to 38.33%). Similarly, there was a drop in the performance in English Language (54.06% to 46.79%).