摘要：Problem-solving skills are the essential skills that should be owned by students.This research aimed to analyze the problemsolving skills of senior high school students in biology learning of excretory system topics.The method used was descriptivequantitative.The data were collected using a problem-solving essay test.The subjects were the eleventh-grade students of senior high schools in Surakarta,who were divided into A category (high level) and B category (low level).Based on the analysis result,it can be seen that the problem-solving skill achievement of the eleventh grade of A group includes: defining the problem (50.78%),examining the problem (40.62%),planning a solution (19.53%),implementing the solution (37.50%),and evaluating (40.62%);while B category includes: Defining the problem (46.35%),examining the issue (34.67%),planning a solution (18.54%),implementing the solution (20.96%),and evaluating (32.25%).The lowest percentage in both categories was found in planning the solution and evaluating.Based on the result,the average problem-solving skills in A group was 37.81% and B Category was 32,26%.Based on the data,it can be concluded that students' problem-solving skills in A and B categories are still low.The skills can be improved by conducting problem-solving based learning and familiarizing students to solve problems according to problemsolving stages.
