1. “Certificate of Japanese Language Proficiency Test” of December 1996 – level 2, administered by The Japan Foundation and Association of International Education, Japan. 1202160.
2. “Certificate of Proficiency in English” University of Cambridge. Local Examinations Syndicate. December 1990. Reference number   90CBR0208064.
3. “Certificate of Proficiency in English” The University of Michigan. English Language Institute. Ann Arbor, Michigan – United States of America. November 24, 1990.
4. “Certificate of Japanese Language Proficiency Test” of December 1989 – level 3, administered by the Japan Foundation and Association of International Education, Japan. 89*3180130923.
5. “The Oxford Examination in English as a Foreign Language” Higher level – June 1989. University of Oxford. Delegacy of Local Examinations. Index number 40400/1064.
6. “Certificate of Japanese Language Proficiency Test”of December 1988 – level 4, administered by the Japan Foundation and Association of International Education, Japan. 88*3180141382.
7. “First Certificate in English” University of Cambridge. Local Examinations Syndicate. – December 1987. Reference number 87CBR0200277.

• Curso de Língua Inglesa realizado na “Sociedade Brasileira de Cultura Inglesa” – São Paulo, de 1983 a 1990.
• Curso de Língua Japonesa de 1987 a 1993 no “Nippak Nobiru Gakkuen“.
• Curso de Língua Japonesa de 1974 a 1981. Certificado de Conclusão em 12 de julho de 1981 conferido pelo “Mahayana Gakkuen“.