Penelitian ini bertujuan untuk mengetahui gambaran minat belajar siswa kelas lintas minat biologi terhadap pembelajaran biologi berbasis kurikulum 2013 dan menganalisis pelaksanaan pembelajaran kelas lintas minat biologi yang menerapkan kurikulum 2013. jenis penelitian ini adalah deskriptif kualitatif. sampel pada penelitian ini adalah seluruh siswa kelas xi dan xii lintas minat biologi di sma negeri kota tarakan dan guru lintas minat biologi di sma negeri kota tarakan. pengumpulan data dilakukan dengan cara angket, wawancara dan observasi. keseluruhan data diperoleh berupa skor yang dianalisis dengan menggunakan microsoft excel dan dikategorikan menurut kriteria penafsiran angket. berdasarkan hasil penelitian dapat disimpulkan bahwa (1) siswa kelas lintas minat biologi berbasis kurikulum 2013 di sma negeri kota tarakan memiliki minat belajar biologi. hal ini sesuai dengan hasil rata-rata persentase angket minat belajar siswa yaitu 71% dan termasuk dalam kategori cukup, (2) pelaksanaan pembelajaran pada kelas lintas minat biologi berbasis kurikulum 2013 di sma negeri kota tarakan dinilai sebagain besar terlaksana. hal tersebut terbukti dari hasil analisis data diperoleh nilai rata-rata persentase sebesar 85% dan termasuk dalam kategori sebagian besar terlaksana. dimana sman 1 tarakan sebesar 85%, sman 2 (bio 1) tarakan sebesar 83%, sman 2 (bio 2) tarakan sebesar 79%, sman 3 (bio 1) sebesar 81%, sman 3 (bio 2) tarakan sebesar 95%, dan man tarakan sebesar 86%, (3) persentase pelaksanaan pembelajaran di sma negeri kota tarakan termasuk dalam kategori sebagian besar terlaksana dan minat belajar siswa termasuk dalam kategori cukup. tetapi minat belajar siswa di sman 1 dan 2 (bio 2) masih dalam kategori rendah yaitu 64%. hal tersebut dibuktikan oleh hasil analisis minat belajar siswa dimana aspek keterlibatan sman 1 (57%) dan sman 2 (bio 2) (60%) lebih rendah dibandingkan dengan sekolah lain.

The purpose of this research were to determine the description of students’ interest in cross-biology class learning biology based on curriculum 2013 and analyze the implementation of cross-interest biology class in implemented 2013 curriculum. the research design in this research is descriptive qualitative. the sample in this research were all cross-interest biology students of class xi and xii in tarakan city high school and cross-interest biology teachers in tarakan city high school. technique of collecting data questionnaire, interview and observation. all data obtained in the form of scores were analyzed using microsoft excel and categorized according to the questionnaire interpretation criteria. based in the result in this research it can be concluded that (1) students of cross-interest biology based curriculum 2013 in tarakan city high school have an interest in learning biology. this is consistent with the result of the average percentage of students’ interest in learning questionnaires that is 71% and is included in the enugh category, (2) the implementation of learning in a cross interest biology class based on curriculum 2013 at tarakan city high school was considered to be the most carried out. this is evident from the results of data analysis obtained an average value of a percentage of 85% and included in the category mostly implemented. sman 1 tarakan is 85%, sman 2 (bio 1) tarakan is 83%, sman 2 (bio 2) tarakan is 79%, sman 3 (bio 1) is 81%, sman 3 (bio 2) tarakan is 95%, and man tarakan by 86%, (3) the percentage of the implementation of learning in sma negeri tarakan city included in the category mostly implemented and student interest in learning included in the category enough. but the students’ learning interest in sman 1 and 2 (bio 2) is still in low category of 64%. this is evidenced by the analysis results in students’ learning interest where the involvement aspect of sman 1 (57%) and sman 2 (bio 2) (60%) lower than other schools.